3D Max Question

If I import a model from WC3, edit it, then export it again, will the original animations (stand, attack, etc) for the unit work, or do I need to remake the animations in 3Dsm?

if you only move verts, you can copy your edited geoset data over the values in the original .mdl to preserve animations and event objects and particle effects and such forth.

If you want to add or delete verticies, you'll need to reanimate.